I use survey monkey, www.surveymonkey.com as does everyone I know at my uni. Its good, you have to pay about $9 a month to get everything you need to get data out of it in excel format.
The only thing it doesn't do (that I've noticed anyway) is piping. Which is the ability to reproduce an answer in a question later on. e.g. a name, so...
Q1: what is your friends name......Dave
Q2
Q3
Q4: Where do you usually meet Dave
(it isn't able to do this)
but is good in every other way (up)
If you PM me I can show you a survey i currently have running - to show you how it looks.